VOLMGT_CHECK(3VOLMGT) Volume Management Library Functions VOLMGT_CHECK(3VOLMGT)


NAME


volmgt_check - have Volume Management check for media

SYNOPSIS


cc [ flag... ] file... -lvolmgt [ library ... ]
#include <volmgt.h>

int volmgt_check(char *pathname);


DESCRIPTION


This function is obsolete. The management of removable media by the
Volume Management feature, including vold, has been replaced by software
that supports the Hardware Abstraction Layer (HAL). Programmatic support
for HAL is through the HAL APIs, which are documented on the HAL web
site. See hal(5). The return value of this function is undefined.


This routine asks volume Management to check the specified pathname and
determine if new media has been inserted in that drive.


If a null pointer is passed in, then Volume Management will check each
device it is managing that can be checked.


If new media is found, volmgt_check() tells volume management to initiate
appropriate actions.

RETURN VALUES


The return from this function is undefined.

ERRORS


This routine can fail, returning 0, if a stat(2) or open(2) of the
supplied pathname fails, or if any of the following is true:

ENXIO
volume management is not running.


EINTR
An interrupt signal was detected while checking for media.


EXAMPLES


Example 1: Checking If Any New Media Is Inserted




To check if any drive managed by volume management has any new media
inserted in it:


if (volmgt_check(NULL)) {
(void) printf("Volume management found media\n");
}


This would also request volume management to take whatever action was
appropriate for the new media.


ATTRIBUTES


See attributes(5) for descriptions of the following attributes:


+---------------+-----------------+
|ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+---------------+-----------------+
|MT-Level | MT-Safe |
+---------------+-----------------+

SEE ALSO


volcheck(1), open(2), stat(2), volmgt_inuse(3VOLMGT),
volmgt_running(3VOLMGT), attributes(5), hal(5)

NOTES


Since volmgt_check() returns 0 for two different cases (both when no
media is found, and when an error occurs), it is up to the user to check
errno to differentiate the two, and to ensure that volume management is
running.


March 8, 2007 VOLMGT_CHECK(3VOLMGT)